Communications: electrical – Selective – Path selection
Patent
1976-12-30
1978-05-30
Farley, Richard A.
Communications: electrical
Selective
Path selection
340 5C, H04B 1100, H04R 2900
Patent
active
040926273
ABSTRACT:
Calibration of expendable sonobuoys can be made in-situ to assure the transmission of representative data. A pair of integrated circuit timers are coupled together to provide on-off duty cycles during which a spectral distribution of calibration signals is fed to the sonobuoy. Since the spectral distribution and amplitude of the calibration signals are known, a remote monitoring station is continuously apprised of the sonobuoy's calibration.
REFERENCES:
patent: 3875548 (1975-04-01), Acks
Markus, Guidebook of Electronic Circuits, McGraw-Hill Book Co., 1974, p. . 2
Murdock Donald
Stixrud Thomas E.
Farley Richard A.
Johnston Ervin F.
Keough Thomas Glenn
Sciascia Richard S.
The United States of America as represented by the Secretary of
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